scholarly journals Improvement of Biological Productivity in Degraded Lands in Thailand III. Soil hardness measurement in the field.

Tropics ◽  
1995 ◽  
Vol 4 (2/3) ◽  
pp. 151-172 ◽  
Author(s):  
Katsutoshi SAKURAI ◽  
Bunyarit PURIYAKORN ◽  
Pornchai PREECHAPANYA ◽  
Virat TANPIBAL ◽  
Kanit MUANGNIL ◽  
...  
Keyword(s):  
Hardness Measurement ◽  
Biological Productivity ◽  
Degraded Lands ◽  
Soil Hardness

scholarly journals Improvement of Biological Productivity in Degraded Lands in Thailand. II. Influences of Soil Temperature, Moisture, and Fertility on Plant Growth in the Takuapa Experimental Site.

Tropics ◽  
1991 ◽  
Vol 1 (2/3) ◽  
pp. 113-129 ◽  
Author(s):  
Katsutoshi SAKURAI ◽  
Buared PRACHAIYO ◽  
Tasnee ATTANANDANA ◽  
Virat TANPIBAL ◽  
Sigeru ARAKI ◽  
...  
Keyword(s):  
Plant Growth ◽  
Soil Temperature ◽  
Biological Productivity ◽  
Experimental Site ◽  
Degraded Lands

FEATURES OF MONITORING OF DEGRADED LANDS TO ASSESS POSSIBILITIES FOR THEIR REHABILITATION

2020 ◽  
pp. 37-43
Author(s):  
B.I. KORZHENEVSKIY ◽  
◽  
N.V. KOLOMIYTSEV ◽  
G.YU. TOLKACHEV
Keyword(s):  
Agricultural Land ◽  
Meteorological Data ◽  
Morphological Characteristics ◽  
Energy Reserves ◽  
Land Restoration ◽  
Degraded Land ◽  
Degraded Lands ◽  
The Past ◽  
Unused Land ◽  
Restoration Work

Putting out of using large areas of agricultural lands in the central region over the past years has led to worsening the prospects of their purposed use, although the problem of the relevance of their restoration still remains. For many years the unused land was exposed to both natural exogenous processes such as erosion, suffusion, etc. and biological and chemical changes, usually for the worse for agriculture. There are considered elements of monitoring aimed at assessing the prospects or lack of perspectives of rehabilitation of degraded lands. An energy approach to assessing the state of slopes and soils located within these slopes is presented. The main factors of natural and anthropogenic character in assessing the prospects for land restoration are their steepness, excess relative to local bases of erosion other morphological characteristics of slopes which in general is reduced to an assessment of the energy provision of slopes and soils. So the higher the energy capacity of slopes – they are less promising for development, for soils – there is a reverse picture – the higher their energy reserves, the more promising is their use. Approaches to zoning the territory for monitoring from larger taxons of natural and anthropogenic genesis to the sites of special surveillance within which the prospects for rehabilitation of the agricultural land are evaluated. The most important factor is the material expediency of such actions, i.e. before starting the restoration work it is necessary to assess the profitability or loss of the proposed event. In cases of the material expediency it is feasible as further actions to include energy assessments of slopes and soils; zoning of the object according to the steepness and oriented characteristics of soil washout; and the possibility of obtaining agronomic and meteorological data on a timely basis. The result of the work is a forecast assessment of the prospects for restoring degraded land for the intended purpose using modern databases and WEB-systems.

Agroforestry practices in leasehold forests in Tanahun, a Mid-hill district of Western Nepal

1970 ◽  
Vol 16 (2) ◽  
pp. 45-49
Author(s):  
R Shakya ◽  
SK Baral ◽  
R Basukala ◽  
S Khanal
Keyword(s):  
Key Words ◽  
Traditional Knowledge ◽  
Poverty Alleviation ◽  
Technical Information ◽  
Environmental Conservation ◽  
Forest Product ◽  
Degraded Lands ◽  
Hill District ◽  
Dual Objectives ◽  
Agroforestry Practices

(Author of this paper, S Khanal was omitted in error - added on 29-3-2010)Leasehold forestry in Nepal has sought to address both poverty alleviation and environmental conservation. The major agroforestry practices observed in the leasehold forests were silvopasture, hortisilviculture and Non Timber Forest Product (NTFP) cultivation. The most prominent problem to the users in adopting agroforestry practices was the lack of technical information. Some successful insights observed suggest that agroforestry has a notable potential to address dual objectives of poverty alleviation and conservation. The need to evolve sustainable mechanism for promoting agrofrorestry in degraded lands through the dissemination of useful traditional knowledge, innovative practices and improved technologies was identified. Key words: Leasehold forest; agroforestry; silvopasture; hortisilviculture; NTFP Banko Janakari Vol.16(2) 2006 pp.45-49

AMOUNT AND STRUCTURE OF THE BIOLOGICAL FERTILITY OF SOYA, DEPENDING ON THE SYSTEM OF MAIN TILLAGE OF SOIL AND MEASURES TO OPTIMIZE NUTRITION MODE

2020 ◽  
Author(s):  
M. Novokhatskyi ◽  
◽  
V. Targonya ◽  
T. Babinets ◽  
O. Gorodetskyi ◽  
...  
Keyword(s):  
Field Experiments ◽  
Optimal Number ◽  
Soil Tillage ◽  
Forest Steppe ◽  
Biological Productivity ◽  
Tillage Systems ◽  
Application Rates ◽  
Tillage System ◽  
Biological Yield ◽  
The Impact

Aim. Assessment of the impact of the most common systems of basic tillage and biological methods of optimization of nutrition regimes on the realization of the potential of grain productivity of soybean in the Forest-Steppe of Ukraine. Methods. The research used general scientific (hypothesis, experiment, observation) and special (field experiment, morphological analysis) methods Results. The analysis of the results of field experiments shows that the conservation system of soil cultivation, which provided the formation of 27.6 c/ha of grain, is preferable by the level of biological yield of soybean. The use of other systems caused a decrease in the biological yield level: up to 26.4 c/ha for the use of the traditional system, up to 25.3 c/ha for the use of mulching and up to 23.0 c/ha for the use of the mini-till. With the use of Groundfix, the average biological yield of soybean grain increases to 25.6 c / ha for application rates of 5 l/ha, and to 28.2 c/ha for application rates of 10 l/ha when control variants (without the use of the specified preparation) an average of 22.6 c/ha of grain was formed with fluctuations in soil tillage systems from 21.0 (mini-bodies) to 25.8 c/ha (traditional).The application of Groundfix (10 l/ha) reduced the seed abortion rate from 11.0% (average without biofertilizer variants) to 8.0%, forming the optimal number of stem nodes with beans, increasing the attachment height of the lower beans and improving other indicators of biological productivity soybeans. Conclusions. It has been found that the use of the canning tillage system generates an average of 27.6 cent soybean grains, which is the highest indicator among the main tillage systems within the scheme of our research. The use of Groundfix caused a change in this indicator: if the variants with a conservative system of basic tillage without the use of biological preparation (control) were formed on average 24.1 c/ha, the use of Ground Licks caused the increase of biological productivity up to 29.4 c/ha, and at a dose of 10 l/ha biological yield was 32.2 c/ha. It was found that both the use of Groundfix and the basic tillage system influenced the elements of the yield structure: the density of the plants at the time of harvest depended more on the tillage system than on the use of Groundfix; the use of Groundfix and increasing its dose within the scheme of our studies positively reflected on the density of standing plants; the height of attachment of the lower beans and reduced the abortion of the seeds.

scholarly journals A potential feedback loop underlying glacial-interglacial cycles

2021 ◽  
Author(s):  
Els Weinans ◽  
Anne Willem Omta ◽  
George A. K. van Voorn ◽  
Egbert H. van Nes
Keyword(s):  
Ocean Circulation ◽  
Feedback Loop ◽  
Atmospheric Temperature ◽  
Earth System ◽  
Biological Productivity ◽  
Ocean Ventilation ◽  
The Earth ◽  
Main Driver ◽  
Underlying Mechanisms ◽  
Convergent Cross Mapping

AbstractThe sawtooth-patterned glacial-interglacial cycles in the Earth’s atmospheric temperature are a well-known, though poorly understood phenomenon. Pinpointing the relevant mechanisms behind these cycles will not only provide insights into past climate dynamics, but also help predict possible future responses of the Earth system to changing CO$$_2$$ 2 levels. Previous work on this phenomenon suggests that the most important underlying mechanisms are interactions between marine biological production, ocean circulation, temperature and dust. So far, interaction directions (i.e., what causes what) have remained elusive. In this paper, we apply Convergent Cross-Mapping (CCM) to analyze paleoclimatic and paleoceanographic records to elucidate which mechanisms proposed in the literature play an important role in glacial-interglacial cycles, and to test the directionality of interactions. We find causal links between ocean ventilation, biological productivity, benthic $$\delta ^{18}$$ δ 18 O and dust, consistent with some but not all of the mechanisms proposed in the literature. Most importantly, we find evidence for a potential feedback loop from ocean ventilation to biological productivity to climate back to ocean ventilation. Here, we propose the hypothesis that this feedback loop of connected mechanisms could be the main driver for the glacial-interglacial cycles.

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